Valve for internal-combustion engines.



c. N. TBETOR.

VALVE FOR INTERNAL COMBUSTION manna.

APPLICATION FILED AUG. 17, 1911.

Patented N0v.21, 1911.

3SHEETS-SHEET l.

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' 'G. N. TEETOR. VALVE FOR INTERNAL COMBUSTION ENGINES.

APPL IGATION FILED AUG. 17, 1911. 1,009,599.

Patented Nbv. 21, 1911.

o. N. TBETO R VALVE FOR'INTERNAL GOMBUSTLON ENGINES. APPLICATION FILED AUG. 17, 1911.

Patented Nov. 21, 1911.

3 SHEBTS-SHEET 3 22 UNITED STATES PATENT OFFICE.-

GHA RLES N. TEETOR, F 'HAGERSTOWN, INDIANA.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be it known that I, CHARLES N. TEEToR, a

citizen of the United States, residing at Hagerstown, in the county of Wayne and State of Indiana, have invented certain new and useful Improvements in Valves for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such .as will enable others skilled in the art to K which it appertains to make and use the same.

My invention relates to valves for internal combustion engines.

One of the principal objects leading to the designing of this valve isto simplifythe construction and operation of certain valves heretofore used, especially by dispensing with the separate sliding sleeve and or eccentric for operating the same, Which are essential features of said old form of valves.

Other objects are to enlarge the valve and to provide for free movement of, the gases through the valve in order to cool the-same and prevent the burningv up of the lubrication, the heat of the valve being also used for vaporizing low used for fuel.

gravity oils when they are Another object is to dispense with the ordinary fiat valve seat and, in place thereof, to provide. a cylindrical se'atwhichobviates the deposit thereon of carbon or burned oil.'

Still another object is to provide'a valve which accommodates both intake and ex.- haust and which is always kept clean and tight. g I

IVith these objects in view, the invention consists of a hollow cylindrical valve mounted to reciprocate in a sleeve.containing inlet, delivery and exhaust ports ar ranged at suitable intervals entirely around the same. Said inlet and delivery ports are adapted to communicate at proper times with similar ports in the annular wall of the valve. This arrangement of the ports insures the free movement of the. gases both The construction and operation of the valve is simplified. by having an automatic closely fitting piston ring mounted around the same Y and adapted to close the delivery ports in the sleeve to the delivery ports in the valve and cut off the passage of the exhaust through the hollow body of the valve while theexhaust ports are being opened by the Specification of Letters Patent. Patented Nov, 21, 1911 Application filed Au ust '17, 191;. Serial No. 644,699. 5

return stroke of said valve. The sleeve surrounding the valveis cut in order to insert the ring withoutz'springing the latter. The

ring is also cut across as hereinafter described. Said ring has a limited reciprocal movement with the valve by reason of its frictional contact therewith but, when said ring is arrested, the valve is adapted to slide within it whereby the delivery ports will be kept closed during the compression,

power and exhaust'strokes of the engine and durlng the uncovering of theexhaust ports with the exhaust ports open. Fig. 2 is a broken view showing the same valve in its partially raised or second position with the inlet and delivery ports open andthe automatic compression ring 'in'its highest po- SltlOIL Fig. 3 1s a broken sectional View of the same valve showing it in its fully raised or third position when all of the ports are closed durlng the compression and ignltion strokes of the piston, and the delivery ports are under the automatic compression ring.

Fig. 4 is a broken horizontal sectional view of. the valve, sleete, and the cut portion of the automatic compression ring taken on line m-m of Fig. 3, and Fig. 5 is aview, similar to Fig. 1, of an engine having one of my valves operated by a cam instead of an eccentric.

Referring first to Figs. 1, 2 and 3, 1 designatcs the cylinder of the engine, and 2 the piston. The crank and shaft are eliminated as being unnecessary to be shown.

case, is fitted with a stationary sleeve 5'. Said sleeve has a horizontal row of inlet ports 6 arranged opposite the inlet passage 7 in thecylinder casting 8, said passage be- The valve chamber 4, which opens into the crank,

ing extended in the casting entirely around the sleeve. Another horizontal row of ports 9 is formed in the sleeve in alinement with the delivery passage 10 leading to the cylinder and also extending entirely around the sleeve. A third horizontal row of ports 1 1 is formed in the sleeve above the ports 9 but also in alinement with the passage 10. The ports 9 are preferably located at or near the lower extremity of the passage 10, whereas the ports 11 are placed at or near the upper extremity thereof.

The sleeve 5 is further formed with a circumferential horizontal groove or recess 12 on its inner surface extending from the ports 9 upwardly but terminating below the ports 11. In this groove there is housed a ring 13 of less width than said groove and fitted closely around the hollow valve cylinder 14. The difference in widths of the ring and groove is substantially equal to the breadth of the ports 9, for the purpose hereinafter explained. The sleeve is cut horizontally and rabbeted, at 3 in Figs. 1, 2 and 3, at the base of thegroove' 12 in order to permit the ring to be inserted without springing it out of shape, which might mar its effectiveness in operation.

The ring 13 is split vertically at 13*, as illustrated in Fig. 4:. A pin. or lug 13 is fixed in the'wall or bottom of the groove 12 in vertical alinement with one of the uncut portions of the valve between two adjacent ports 16 hereinafter described. This pin or lug extends between the severed ends of the automatic compression ring and holds it against turning sufficiently to uncover either of said ports 16 while allowing for the vertical movement of said ring on the valve. The pressure of the gases in the cylinder against the ring, as the latter passes across the delivery ports 9 in the sleeve on the exhaust stroke, aids in holding said ring tightly upon the valve so as to close'the deplaced around the valve, the first near the base thereof, the second between the ports 15 and 16, and the third near the upper end of said valve.

As illustrated in Figs. 1, 2 and 3, the valve is reciprocated by means of an eccentric 20 and connecting arm 21. It will be understood that the eccentric is suitably mounted and timed with respect to the piston 2, although it has been deemedunnecessary to show this connection in' detail. As in all four cycle engines, the eccentric moves at half crank speed. In Fig. 1, it will be seen that the valve is in its lowest position,

that the piston 2 is also at the lower end of its stroke, and that all of the ports in the sleeve 5 are closed except the exhaust ports 11. When the parts are in this position, the exhaust gases are, therefore, free to pass out of the cylinder 1 via the ports 11 in the sleeve 5 to the main exhaust opening 22 in the up per end of the valve chamber. It will be noted that, in this position of the parts, the ring 13 is in its lowest position where it closes the ports 9 in the sleeve, and that the ports 15 and 16 in the valve are out of alinement with the ports 6 and 9, respectively, in the sleeve. The parts remain substantially in this position during the exhaust stroke of the piston 2. By the time said piston has reached the upper end of its exhaust stroke, the eccentric 2.0 will have turned to the position illustrated in Fig. 2 and thevalve will have been raised to its second position, as there shown. The upward movement of the valve from the position shown in Fig. 1 to that shown in .Fig. 2 brings the ports 15 and 16, respectively, into alinement with the ports 6 and 9 in the sleeve, closes the exhaust ports 11, and places the ring 13 in'it's highest position so as to close the ports 16 when the valve is raised on the compression and power strokes. The charge is, therefore, free to enter the cylinder above the piston via the passage 7, ports 6 and 15 leading into the hollow body of the valve,'and the ports 16 and 9 leading from said valve into the passage 10. During the compression and explosion strokes ,the valve is first raised to the limit of its upward movement, as illustrated in Fig. 3, and then lowered to the position illustrated in Fig. 1 It will be understood, however, that the completion of the upward stroke of the valve is accomplished immediately after the. charge is delivered into the cylinder and that in its fully raised position, the valve closes the ports 9 and 11 leading to the cylinder so that there is no escape for the gases during the ignition stroke.

It will be observed that during the upward movement of the valve from the position illustrated in Fig. 2 to that shown in Fig. 3, the ring 13 is arrested by the upper extremity of the groove 12 while said valve continues to move upward until the ports 16 therein are covered bysaid ring. On the down stroke of the valve, the ring is carried with it and keeps said ports 16 sealed until they have passed the ports 9 arranged in the sleeve opposite the passage. 10, thereby preventing any of the exhaust gases from escaping through 'the body of the valve which would otherwise be the case because said ports 16 are obliged to pass the ports 9 constructed in the same manner as described. In connection with theshowing in F gs. 1,.

2 and 3, and that its operati'on is similar thereto. The two projections 25 and 26 on said cam produce thesecond and third steps in the upward movement of the valve, as

previously described.

I claim:

1. In an internal combustion engine, the

combination, with the valve casing, piston and cylinder, of a valve adapted to reciprocate in the valve casing and having delivery ports therein, a. slide mounted on said valve and adapted to be carried with'it through a portion of its stroke, and means'to limit the movement of saidslide to a fixed space whereby said delivery ports are closed to the cylinder by said slide throughout the stroke of the valve during which the compression and power strokes of the piston are taking place, said valve capable of continuing its strokes after the slide is arrested-for the purposes specified. I

2. In an internal combustion engine, the combination, with the valve casing, piston and cylinder, of a cylindrical valve adapted to reciprocate in the valve casing-and having delivery ports therein, an automatic,

" valve casing, of a valve adapted toreciprocate in the valve casing and having delivery ports therein, a slide mounted on said valve and adapted to be carried with it ,through a portion of its stroke, and means to limit the movement of said slideto a. fixed space whereby said delivery ports are closed to the cylinder throughout the compression, power and exhaust strokes of the piston, said valve apableof continuing its strokes after the slide is arrested'for the purposes specified.

4. Inan internal combustion engine, the combination, with the cylinder, piston and valve casing. of a cylindrical valve adapted to reciprocate in the valve casing and having delivery ports therein, an automatic (-on'ipression ring mounted around said valve and adaptedto be carried with it through a portion of its stroke, and means to limit the movement of said ring to a-tixed space whereby said delivery ports are closed to the cylinder throughout the compression, power and exhaust strokes of the piston, said valve (-apable of continuing its strokes after the ningis arrested for the pin-poses specified.

In an internal combustion engine. the combination, with the cylinder, piston and valve casingihaving a delivery passage leading to said cylinder, of a stationary sleeve fitted in the valve casing and provided with delivery and exhaust ports both arranged in alinement with said delivery passage, a hollow cylindrical valve mounted to reciprocate in said sleeve and having ports leading from the interior to the outer surface thereof and adapted to register with the delivery ports in the sleeve when the exhaust ports therein are closed by said valve, a ring fitted closely around the valve and adapted 'to be carried with it through a portion of its stroke, and

means tolimit the movementoi said ring to a fixed space wherebythe exhaust gases are prevented from passing into the body of the valve while the ports therein are passing the delivery ports in the sleeve on the stroke of the valve during which the compression and power strokes of the piston are taking place.

6. In an internal combustion engine, the combination, with the cylinder, piston and valve casing having a delivery passage leading to said cylinder, of a sleeve fitted in the valve casing and provided with delivery and exhaust ports both arranged in alinement with said deliver passage, said sleeve also having 'a circum erential groove formed in its inner surface and extending from said delivery ports toward the exhaust ports but terminating short of the latter, a hollow cylindrical valve mounted to reciprocate in said sleeve and having delivery ports adapted to register with the delivery ports inthe sleeve the valve, and a ring fitted closely around the valve and housed in said groove whereby said ring has a limited reciprocal movement with the valve and serves to prevent the exhaustgases from enteringthe body of the valve during the passage of the delivery orts therein past the delivery ports in the s eeve on the stroke of the valve during which the compression and power strokes of the piston are taking place,

7 In an internal combustion engine, the combination, with the cylinder, piston and valve casing having a delivery passage leading to said cylinder, of a sleeve fitted in the valve casing, said delivery passage extending entirely around said sleeve, the latter provided with a row of delivery ports and arow of exhaust ports both extending entircly around said sleeve and arranged in alinel'n'ent with said delivery passage, a hollow cylindrical valve mounted to reciprocate 111 said sleeve and having ports adapted to register with the delivery ports in the sleeve when the exhaust ports therein are closed by said valve, a ring fitted closely around the valve and adapted to be carried with .itthrough a portion of its stroke, and means to limit the movement of ring to a fixed space, whereby the exhaust gases are prevented from passing into the body of the valve'whilethe ports therein are passing when the exhaust ports therein are closed by v I the delivery ports in the sleeve on the stroke of the valve during which the compression place.

8. In an internal combustion engine, the combination, with the cylinder, piston and valve casing having a delivery passage leading to said cylinder, and an inlet passage. arranged out of the plane of said delivery passage, of a sleeve fitted in said valve casing and provided with delivery and exhaust ports arranged in-alinement with said delivery passage, and inlet ports in alinement with said inlet passage, a hollow cylindrical. valve mounted to reciprocate in the sleeve and having two sets of ports adapted to register respectively with the inlet and delivery ports in the sleeve when the exhaust ports therein are closed by the valve, a ring fitted closely around the valve and. adapted to be carried with it through a portion of its stroke, andjmcan's to limit the movement of said ring to a fixed space whereby theeX- haust gases are prevented from passing into the body of the "alve while the ports therein are passing the delivery ports in the sleeve on the stroke of the valve during which the compression and power strokes of the piston are taking place.

9. In an internal combustion engine, the combination, with the cylinder, piston and valve casing having a delivery passage leading to the cylinder and an inlet passage ar ranged out of the plane of said delivery passage, of a sleeve fitted in the 'alve casing and provided with delivery and exhaust ports both arranged in alinement with said delivery passage, and inletports in alinement with said inlet passage, a hollow cylindrical valve mounted to reciprocate in the sleeve and having closed ends, said valve provided with two sets of ports adapted to register respectively with the inlet and de livery ports in the sleeve when the exhaust: ports therein are closed by the valve. whereby the unexploded gases pass through the body of the valve hetero entering the cylinder, a ring fitted dosely around the valve and adapted to be. carried with it through.

a portion of its stroke, and means to limit the movement of said ring to a fixed space for preventing the exhaust gases from passing into the body of the valve while the ports therein are passing the delivery ports in the sleeve on the stroke of the valve din strokes of the piston are. taking place.

casing, and having delivery ports therein, a

split ring mounted closely around the valve and adapted to be carried with it through a portion of -its stroke, and means to limit the movement. of said ring to a fixed space whereby'the valve is capable of continuing its movement alone, the open portion of said ring being arranged in alinement with one of the uncut parts of the valve between adjacent ports, and means to retain the ring against turning on the valve for the purpose specified.

1.11.. 111 an internal combustion engine, the combimition, with the cylinder and valve casing, of a sleeve titted in the valve casing and provided with delivery ports, a valve having a rcci n-ocal movement in said sleeve and also provided with delivery ports, a split ring mounted closely around the valve and adapted to lit carried with it through a portion of its stroke, and means to limit the movement of said ring to a fixed space wherehv the. valve is capable of continuing its movement alone. the open portion of the ring being arranged in alinement with one of theuneut partsot' the valve between adjacent ports. and a projection on the sleeve extending into said open portion of the ring folf lllt, purpose specified.

1'2. ln an internal combustion engine, the cmnlvination, with the cylinder and valve casing, of a. sleeve fitted in the valve casing and provi led with delivery ports, aivalve having a reciprocal movement in said sleeve and also provided with delivery ports, a split ring mounted closely around the valve and adapted-to be. carried with it through a limited space after which the valve is,

capable of continuing its movement alone, said sleeve having an interval circumferential groove housing said ring and limiting its movement with the valve, the open portion of the ring being arranged in alinemeut with one of the uncut parts of the valve between adjacent ports, and a projection on the sleeve, at the base of the groove. 

